function getCookie(name) {
    var r = document.cookie.match("\\b" + name + "=([^;]*)\\b");
    return r ? r[1] : undefined;
}


$(function(){

    // 打开登录框
    $('.comment_form_logout').click(function () {
        $('.login_form_con').show();
    });

    // 收藏
    $(".collection").click(function () {
        // 参数：要收藏哪条新闻
        var params = {
            'news_id':$(this).attr('data-newid'),
            'action':'collect'
        };

        $.ajax({
            url: '/news/news_collect',
            type: 'post',
            data: JSON.stringify(params),
            contentType: 'application/json',
            headers: {'X-CSRFToken':getCookie('csrf_token')},
            success:function (response) {
                if (response.errno == "0") {
                    // 收藏成功，隐藏收藏按钮
                    $(".collection").hide();
                    // 显示取消收藏按钮
                    $(".collected").show();
                }else if (response.errno == "4101"){
                    $('.login_form_con').show();
                }else{
                    alert(resp.errmsg);
                }
            }
        });
    });

    // 取消收藏
    $(".collected").click(function () {
        // 参数：要取消收藏哪条新闻
        var params = {
            'news_id':$(this).attr('data-newid'),
            'action':'cancel_collect'
        };

        $.ajax({
            url: '/news/news_collect',
            type: 'post',
            data: JSON.stringify(params),
            contentType: 'application/json',
            headers: {'X-CSRFToken':getCookie('csrf_token')},
            success:function (response) {
                if (response.errno == "0") {
                    // 取消收藏成功，隐藏收藏按钮
                    $(".collection").show();
                    // 显示取消收藏按钮
                    $(".collected").hide();
                }else if (response.errno == "4101"){
                    $('.login_form_con').show();
                }else{
                    alert(resp.errmsg);
                }
            }
        });
    });

    // 评论提交:直接评论新闻，不是回复评论
    $(".comment_form").submit(function (e) {
        e.preventDefault();

        var news_id = $(this).attr('data-newsid');
        var news_comment = $(".comment_input").val();

        if (!news_comment) {
            alert('请输入评论内容');
            return;
        }
        var params = {
            "news_id": news_id,
            "comment": news_comment
        };

        $.ajax({
            url: "/news/news_comment",
            type: "post",
            contentType: "application/json",
            headers: {"X-CSRFToken": getCookie("csrf_token")},
            data: JSON.stringify(params),
            success: function (resp) {
                if (resp.errno == '0') {
                    var comment = resp.data;
                    // 拼接内容
                    var comment_html = '';
                    // 拼接内容的过程。。。 
                    comment_html += '<div class="comment_list">';
                    comment_html += '<div class="person_pic fl">';
                    if (comment.user.avatar_url) {
                        comment_html += '<img src="' + comment.user.avatar_url + '" alt="用户图标">'
                    }else {
                        comment_html += '<img src="../../static/news/images/person01.png" alt="用户图标">'
                    }
                    comment_html += '</div>';
                    comment_html += '<div class="user_name fl">' + comment.user.nick_name + '</div>';
                    comment_html += '<div class="comment_text fl">';
                    comment_html += comment.content;
                    comment_html += '</div>';
                    comment_html += '<div class="comment_time fl">' + comment.create_time + '</div>';

                    comment_html += '<a href="javascript:;" class="comment_up fr" data-commentid="' + comment.id + '" data-newsid="' + comment.news_id + '">赞</a>';
                    comment_html += '<a href="javascript:;" class="comment_reply fr">回复</a>';
                    comment_html += '<form class="reply_form fl" data-commentid="' + comment.id + '" data-newsid="' + news_id + '">';
                    comment_html += '<textarea class="reply_input"></textarea>';
                    comment_html += '<input type="button" value="回复" class="reply_sub fr">';
                    comment_html += '<input type="reset" name="" value="取消" class="reply_cancel fr">';
                    comment_html += '</form>';

                    comment_html += '</div>';

                    // 拼接到内容的前面
                    $(".comment_list_con").prepend(comment_html);
                    // 让comment_sub 失去焦点
                    $('.comment_sub').blur();
                    // 清空输入框内容
                    $(".comment_input").val("");

                    // 重新计算当前需要展示的评论条数
                    updateCommentCount();
                } else if (resp.errno == "4101"){
                    $('.login_form_con').show();
                } else {
                    alert(resp.errmsg);
                }
            }
        });

    });

    // 这里的js和新闻的评论信息相关的：回复评论，评论点赞
    $('.comment_list_con').delegate('a,input','click',function(){

        var sHandler = $(this).prop('class');

        if(sHandler.indexOf('comment_reply')>=0)
        {
            $(this).next().toggle();
        }

        if(sHandler.indexOf('reply_cancel')>=0)
        {
            $(this).parent().toggle();
        }

        // 点赞的JS
        if(sHandler.indexOf('comment_up')>=0)
        {
            var $this = $(this);
            var action = "add";
            if(sHandler.indexOf('has_comment_up')>=0)
            {
                // 如果当前该评论已经是点赞状态，再次点击会进行到此代码块内，代表要取消点赞
                action = "remove"
            }

            var comment_id = $(this).attr("data-commentid");
            var params = {
                "comment_id": comment_id,
                "action": action
            };

            $.ajax({
                url: "/news/comment_like",
                type: "post",
                contentType: "application/json",
                headers: {
                    "X-CSRFToken": getCookie("csrf_token")
                },
                data: JSON.stringify(params),
                success: function (resp) {
                    if (resp.errno == "0") {
                        var like_count = $this.attr('data-likecount');

                        if (like_count == undefined) {
                            like_count = 0
                        }

                        // 更新点赞按钮图标
                        if (action == "add") {
                            like_count = parseInt(like_count) + 1;
                            // 代表是点赞
                            $this.addClass('has_comment_up')
                        }else {
                            like_count = parseInt(like_count) - 1;
                            $this.removeClass('has_comment_up')
                        }
                        // 更新点赞数据
                        $this.attr('data-likecount', like_count);
                        if (like_count == 0) {
                            $this.html("赞")
                        }else {
                            $this.html(like_count)
                        }
                    }else if (resp.errno == "4101"){
                        $('.login_form_con').show();
                    }else {
                        alert(resp.errmsg)
                    }
                }
            });
        }

        // 回复别人的评论
        if(sHandler.indexOf('reply_sub')>=0)
        {
            var $this = $(this);
            var news_id = $this.parent().attr('data-newsid');
            var parent_id = $this.parent().attr('data-commentid');
            var comment = $this.prev().val();

            if (!comment) {
                alert('请输入评论内容');
                return;
            }
            var params = {
                "news_id": news_id,
                "comment": comment,
                "parent_id": parent_id
            };
            $.ajax({
                url: "/news/news_comment",
                type: "post",
                contentType: "application/json",
                headers: {
                    "X-CSRFToken": getCookie("csrf_token")
                },
                data: JSON.stringify(params),
                success: function (resp) {
                    if (resp.errno == "0") {
                        var comment = resp.data;
                        // 拼接内容
                        var comment_html = "";
                        comment_html += '<div class="comment_list">';
                        comment_html += '<div class="person_pic fl">';
                        if (comment.user.avatar_url) {
                            comment_html += '<img src="' + comment.user.avatar_url + '" alt="用户图标">'
                        }else {
                            comment_html += '<img src="../../static/news/images/person01.png" alt="用户图标">'
                        }
                        comment_html += '</div>';
                        comment_html += '<div class="user_name fl">' + comment.user.nick_name + '</div>';
                        comment_html += '<div class="comment_text fl">';
                        comment_html += comment.content;
                        comment_html += '</div>';
                        comment_html += '<div class="reply_text_con fl">';
                        comment_html += '<div class="user_name2">' + comment.parent.user.nick_name + '</div>';
                        comment_html += '<div class="reply_text">';
                        comment_html += comment.parent.content;
                        comment_html += '</div>';
                        comment_html += '</div>';
                        comment_html += '<div class="comment_time fl">' + comment.create_time + '</div>';

                        comment_html += '<a href="javascript:;" class="comment_up fr" data-commentid="' + comment.id + '" data-newsid="' + comment.news_id + '">赞</a>';
                        comment_html += '<a href="javascript:;" class="comment_reply fr">回复</a>';
                        comment_html += '<form class="reply_form fl" data-commentid="' + comment.id + '" data-newsid="' + news_id + '">';
                        comment_html += '<textarea class="reply_input"></textarea>';
                        comment_html += '<input type="button" value="回复" class="reply_sub fr">';
                        comment_html += '<input type="reset" name="" value="取消" class="reply_cancel fr">';
                        comment_html += '</form>';

                        comment_html += '</div>';
                        $(".comment_list_con").prepend(comment_html);
                        // 请空输入框
                        $this.prev().val('');
                        // 关闭
                        $this.parent().hide();

                        // 重新计算当前需要展示的评论条数
                        updateCommentCount();
                    }  else if (resp.errno == "4101"){
                        $('.login_form_con').show();
                    } else {
                        alert(resp.errmsg)
                    }
                }
            });
        }
    });

        // 关注当前新闻作者
    $(".focus").click(function () {

    });

    // 取消关注当前新闻作者
    $(".focused").click(function () {

    })
});

// 更新评论条数
function updateCommentCount() {
    var count = $('.comment_list').length; 
    $('.comment_count').html(count + '条评论');
}